week, andy gulihorn goes for a walk, and every week, about a mile and a half away, his friend, gabe scott, does the same thing and the same time. they walk toward each other, and when they meet, it's the weirdest thing. you see that? clap, snap, high five. then often, they simply walk home. the whole exercise, their way of saying hi. you realize people have telephones and you can just call your buddy? >> yeah, we should have been doing this the whole time. >> i got a friend who will walk through the rain and snow just to give me a high five. i wish everybody could feel that feeling. >> reporter: andy and gabe are musicians in nashville. they met at a concert in 2000, and became friends. they got together on occasion, but not as often as they would have liked. so they invented this bit of silliness seven years ago as a way of guaranteeing they see each other at least once a week. >> so this is the high five. >> reporter: andy has a log every encounter, including the one that was nearly their last. >> he was high five 312. >> reporter: gabe was hospitalized with a severe case of encephaliti